On Fri, 19 Mar 1999, Stefano Fronteddu wrote:
Taylors rule says that
log (1+x) = x - x^2/2 + x^3/3 + + (x^(2n+1)) / (2n+1)!
so
log x = (x-1) - (x-1)^2/2 + ... +(-1)^n-1 * ((x-1)^n) / n
This is correct, but remember that this is an approximation near x=0 (in
the original form),
Right, good observation ;-)
Thanks,
Stefano
-Messaggio originale-
Da: shevek [EMAIL PROTECTED]
A: [EMAIL PROTECTED] [EMAIL PROTECTED]
Data: lunedì 22 marzo 1999 14.32
Oggetto: Re: R: LOG(x) BASIC function
On Fri, 19 Mar 1999, Stefano Fronteddu wrote:
Taylors rule says that
log
very much like a log. You could use the taylor-series, which can be
calculated quite quick, but is not a very good approximation. I don't know
the taylor-series by heart, but I could look it up. In case you want to
start programming, it will be of the form:
y=a+bx+cx^2+dx^3+
Taylors rule
